长沙市敢胜垸污水处理厂深度处理工艺的筛选研究

在二级生物处理工艺确定后，深度处理工艺的选择是保证整个工程出水水质的关键。过滤是污水深度处理工艺中最重要的工序，用以去除原水经沉淀后的残留絮体和杂质，具体依据出水效果、处理效率、投资成本和占地等各方面，确定采用深床过滤工艺。从整体优化的角度出发，结合设计规模，进水水质特征和出水水质要求以及当地的实际条件和要求，选择切实可行且经济合理的深度处理工艺方案，是实现整个长沙市敢胜垸污水处理厂最佳工艺方案的保障。

Selection of Depth Treatment Technology for Ganshengyuan Sewage Treatment Plant in Changsha

After determining secondary biological treatment process, the choice of the depth treatment technology was the key to ensure water-quality in the all engineering.Filtering is the most important processes in wastewater deep treatment process , to remove the raw water after precipitation residual flocs and impurities.Based on water processing efficiency, treatment cost, land use and various aspects, deep bed filtration process was selected.From the perspective of the overall optimization, according to the scale of design, the water quality characteristic and the requirement of water quality and the local actual conditions and re-quirements, selected the feasible, economic and reasonable depth treatment process, was to achieve the best processing plan of Ganshengyuan sewage treatment plant in Changsha.